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Institut für Solare EnergieversorgungstechnikKönigstor 59 Verein an der Universität Kassel e.V.D Kassel Bereich Information und Energiewirtschaft Motivation – The invention of the project virtual power plant with 100% reneable energy sources The two main questions are: 1. Potential: Is it possible to replace all conventional power generation with renewables? 2. Availability:Have renewables the ability to meet the consumption any time? Reinhard Mackensen – At the energy summit talks in 2006 three of the leading companies of the renewable industry promised to produce evidence to supply the German electricity system with Energy from 100% renewable sources.

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Institut für Solare EnergieversorgungstechnikKönigstor 59 Verein an der Universität Kassel e.V.D Kassel Bereich Information und Energiewirtschaft The virtual power plant – Main principle Reinhard Mackensen – The calculation of the energymix is done in two ways: For the future: Weather forecasts lead to power forecasts and schedules. For the actual timestep: Controlling/Adjusting the schedules.

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Institut für Solare EnergieversorgungstechnikKönigstor 59 Verein an der Universität Kassel e.V.D Kassel Bereich Information und Energiewirtschaft First results – Simulation 2006 Reinhard Mackensen – LoadWindPVGasHydroImportExport Wasted wind January February March April May June July August September October November December